added some grid variables
wrote sticky-footer styles
Merge branch 'feature/2.0.0-wip' into feature/Grid
created clearfix helper
added row class
added example styles to testing environment
changed the name of the gutter variable
wrote in some column class styles
created grid mixins
updated grid variables
wrote in grid styles
cleaned up the grid system a bit
rearranged code to put container and footer code before the grid.
* resolved #1 github issue

* completed grid-styles
Merge branch 'feature/Grid' into feature/2.0.0-wip